netdev - Re: [RFC] net: sch_generic: fq_codel vs pfifo

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Message-ID: <20190327113059.6b1224ab@shemminger-XPS-13-9360>
Date:   Wed, 27 Mar 2019 11:30:59 -0700
From:   Stephen Hemminger <stephen@...workplumber.org>
To:     Marc Kleine-Budde <mkl@...gutronix.de>
Cc:     netdev@...r.kernel.org, davem@...emloft.net,
        linux-can@...r.kernel.org, kernel@...gutronix.de,
        Dave Taht <dave.taht@...il.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jiri Pirko <jiri@...nulli.us>
Subject: Re: [RFC] net: sch_generic: fq_codel vs pfifo_fast

On Wed, 27 Mar 2019 17:56:30 +0100
Marc Kleine-Budde <mkl@...gutronix.de> wrote:

> Hello,
> 
> on CAN networking hardware we (the CAN community) experience a lot silent,
> unwanted frame drops inside the kernel. (See first patch for details.) So
> here's a patch series to keep pfifo_fast as default scheduler for CAN hardware
> by default.
> 
> Consider this as an RFC. Regards,
> Marc
> 
> 

Why do you set fq_codel as default qdisc if you know it doesn't work right for your
environment. Is this a distro's want one value problem?